/* ---------- Material 3 design tokens (from Figma) ---------- */
:root {
  /* Single control: change this hue (0-360) to shift the accent color everywhere. */
  --accent-hue: 261;

  --md-sys-color-surface: #FEF7FF;
  --md-sys-color-surface-container-lowest: #FFFFFF;
  --md-sys-color-surface-container-high: #ECE6F0;
  --md-sys-color-outline-variant: #CAC4D0;
  --md-sys-color-on-surface: #1D1B20;
  --md-sys-color-on-surface-variant: #49454F;
  --md-sys-color-secondary: hsl(var(--accent-hue), 15%, 40%);
  --md-sys-color-secondary-container: hsl(var(--accent-hue), 47%, 91%);
  --md-sys-color-on-secondary-container: hsl(var(--accent-hue), 15%, 27%);
  --md-sys-color-primary: hsl(var(--accent-hue), 39%, 45%);
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-surface-container: #F4EFF8;
  --md-sys-color-surface-container-highest: #E7E0EC;
  --md-sys-color-shadow: rgba(0, 0, 0, 0.15);

  --md-corner-extra-large: 28px;

  --font-display: "Google Sans Flex", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "Google Sans Flex", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --md-sys-color-surface: #121212;
  --md-sys-color-surface-container-lowest: #1E1E1E;
  --md-sys-color-surface-container-high: #2B2B2B;
  --md-sys-color-outline-variant: #444444;
  --md-sys-color-on-surface: #F2F2F2;
  --md-sys-color-on-surface-variant: #D4D4D4;
  --md-sys-color-secondary: hsl(var(--accent-hue), 22%, 78%);
  --md-sys-color-secondary-container: hsl(var(--accent-hue), 15%, 25%);
  --md-sys-color-on-secondary-container: hsl(var(--accent-hue), 47%, 91%);
  --md-sys-color-primary: hsl(var(--accent-hue), 100%, 84%);
  --md-sys-color-on-primary: hsl(var(--accent-hue), 30%, 16%);
  --md-sys-color-surface-container: #1A1A1A;
  --md-sys-color-surface-container-highest: #2E2E2E;
  --md-sys-color-shadow: rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--md-sys-color-surface);
  font-family: var(--font-body);
  color: var(--md-sys-color-on-surface);
  transition: background 0.2s ease, color 0.2s ease;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.material-symbols-rounded {
  font-family: "Material Symbols Rounded";
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  font-size: 24px;
  line-height: 1;
  user-select: none;
}

.material-symbols-outlined {
  font-family: "Material Symbols Outlined";
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  font-size: 24px;
  line-height: 1;
  user-select: none;
}

.nav-item__icon--filled {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* ---------- Layout ---------- */
.app {
  display: flex;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  position: relative;
  isolation: isolate;
}

/* ---------- Navigation Rail ---------- */
.nav-rail {
  width: 72px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 44px;
  gap: 28px;
  background: var(--md-sys-color-surface);
  position: relative;
  z-index: 2;
}

.icon-button {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 1px 3px var(--md-sys-color-shadow);
}

.content__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.nav-rail__fab {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  border: none;
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15), 0 1px 2px rgba(0,0,0,0.1);
  transition: box-shadow 0.2s ease;
}
.nav-rail__fab:hover {
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.nav-rail__items {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  width: 72px;
  height: 64px;
  border: none;
  background: transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  color: var(--md-sys-color-on-surface-variant);
  padding: 0;
}

.nav-item__indicator {
  width: 56px;
  height: 32px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.nav-item[data-selected="true"] .nav-item__indicator {
  background: var(--md-sys-color-secondary-container);
}
.nav-item[data-selected="true"] {
  color: var(--md-sys-color-on-surface);
}

.nav-item:not([data-selected="true"]):hover .nav-item__indicator {
  background: rgba(0,0,0,0.06);
}

.nav-item__label {
  font-family: var(--font-display) !important;
  font-weight: 500 !important;
  font-variation-settings: "opsz" 12, "ROND" 100;
  font-size: 12px;
  letter-spacing: 0.5px;
  line-height: 16px;
}

/* ---------- Main content ---------- */
.content {
  flex: 1;
  padding: 16px 16px 17px 0;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  position: relative;
  z-index: 1;
}

.page-title {
  font-family: var(--font-display) !important;
  font-weight: 600 !important;
  font-variation-settings: "opsz" 40, "ROND" 100;
  font-size: 34px;
  line-height: 44px;
  letter-spacing: -0.25px;
  color: var(--md-sys-color-on-surface);
  margin: 0 0 0 10px;
}

@media (min-width: 900px) {
  .page-title {
    font-size: 45px;
    line-height: 52px;
  }
}

/* ---------- View panels ---------- */
.view-panel {
  flex: 1;
  min-height: 0;
  display: none;
}

.view-panel--active {
  display: flex;
}

.view-panel[hidden] {
  display: none !important;
}

/* ---------- Responsive: collapse rail labels on small screens ---------- */
@media (max-width: 768px) {
  .app {
    flex-direction: column;
  }

  .nav-rail {
    width: 100%;
    padding: 12px 12px 8px;
    gap: 10px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
  }

  .nav-rail__items {
    width: 100%;
    flex-direction: row;
    gap: 8px;
  }

  .nav-item {
    width: 100%;
    height: auto;
    min-height: 56px;
    padding: 6px 8px;
    border-radius: 14px;
  }

  .nav-item[data-selected="true"] {
    background: var(--md-sys-color-secondary-container);
  }

  .nav-item__indicator {
    width: 40px;
    height: 40px;
  }

  .nav-item__label {
    font-size: 10px;
  }

  .content {
    padding: 12px 12px 16px;
  }

  .content__header {
    margin-bottom: 12px;
  }

  .page-title {
    font-size: 24px;
    line-height: 30px;
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .nav-rail { padding-top: 10px; }
  .content { padding: 10px 10px 12px; }
  .page-title { font-size: 20px; line-height: 26px; }
  .icon-button { width: 40px; height: 40px; }
}

/* When a nav-item is selected, turn its icon FILL on */
.nav-item[data-selected="true"] .material-symbols-outlined {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}